Network Interface Local Null-Block Construction for Unmappable LBAs
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Solution Overview
Problem
Inefficient use of network resources occurs when remote storage systems send full blocks of null values in response to read requests for unmappable logical block addresses (LBAs), leading to wastage of bandwidth and processing resources.
Innovation Solution
Integrate intelligence within the network interface to recognize unmappable LBAs and avoid sending full blocks of null information, instead embedding compact feedback in response packets and constructing dummy blocks locally within the network interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the remote storage system sends full blocks of null values in response to unmappable LBA read requests, then the response format remains simple and consistent, but network bandwidth and processing resources are wasted
Solution Approach 1:
The patent extracts only the essential information (unmappable LBA indication) from the full null block response, sending merely a compact indicator instead of complete null blocks. This reduces network traffic significantly while the network interface intelligence locally reconstructs the necessary null blocks when needed, resolving the contradiction between simple response format and network resource efficiency.
Solution Approach 2:
The network interface intelligence acts as an intermediary between the storage system and the host system. It receives compact unmappable LBA indicators from the storage system, processes them locally to generate appropriate null blocks, and presents them to the host as if they were full responses. This intermediary function allows optimized communication without compromising system compatibility.
2Productivity
If the network interface transmits complete null blocks for unmappable LBAs, then protocol compatibility is maintained, but transmission time and network resources are consumed
Solution Approach 1:
The patent extracts only the critical unmappable LBA information and transmits it in a compact form, eliminating the need to send complete null blocks over the network. This extraction approach dramatically reduces transmission time while the network interface intelligence reconstructs the full null blocks locally, maintaining protocol compatibility without wasting network bandwidth.
Solution Approach 2:
The network interface intelligence performs preliminary processing of unmappable LBA indicators before they need to be converted into full null blocks for host presentation. By preparing and understanding the unmappable status early in the receive path, the system avoids unnecessary network transmission of full null blocks, thereby reducing transmission time and improving overall productivity.
Data Source
AI summary
An apparatus is described. The apparatus includes a network interface having a system interface, a media access interface and circuitry to construct a block of null values for a logical block address (LBA) in response to a remote storage system having informed the network interface that the LBA was un-mappable.